Bioregeneration of granular activated carbon loaded with binary mixture of phenol and 4-chlorophenol
Date of Issue2015-10-29
Nanyang Environment and Water Research Institute
The extent of bioregeneration of granular activated carbon (GAC) loaded with binary mixture of phenol and 4-chlorophenol (4-CP) was investigated. Batch studies were conducted at (i) different initial phenol and 4-CP loading concentrations and (ii) various GAC dosages to examine the effects of different ratios of phenol to 4-CP adsorbed (Qf ph to Qf 4 -CP) on bioregeneration efficiency. The bioregeneration efficiency was higher when the Qf ph to Qf 4 -CP ratio was higher due to lower adsorption irreversibility of phenol. Increasing the GAC dosage under saturation condition at the same initial conditions only marginally improved the bioregeneration efficiency. The characteristics of the adsorption process (i.e. the irreversibility of adsorption) of each adsorbate are an important factor influencing the extent of bioregeneration in binary component-loaded GAC.
Desalination and Water Treatment
© 2015 Balaban Publishers – Desalination Publications. This paper was published in Desalination and Water Treatment and is made available as an electronic reprint (preprint) with permission of Balaban Publishers – Desalination Publications. The published version is available at: [http://dx.doi.org/10.1080/19443994.2015.1107857]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.